<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>上传文件</title>
</head>
<body>
    <form action = "/upload" method="post" enctype="multipart/form-data">
        姓名：<input type="text" name="username"> <br>
        年龄：<input type="text" name="age"> <br>
        头像：<input type="file" name="image"> <br>
        <input type="submit" value="提交">
    </form>
</body>
</html>